/*
 * Copyright (C) 2009 Google Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above
 * copyright notice, this list of conditions and the following disclaimer
 * in the documentation and/or other materials provided with the
 * distribution.
 *     * Neither the name of Google Inc. nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef BackForwardListChromium_h
#define BackForwardListChromium_h

#include "BackForwardList.h"
#include "HistoryItem.h"

namespace WebKit {
class WebViewImpl;

extern const char backForwardNavigationScheme[];

class BackForwardListChromium : public WebCore::BackForwardList {
public:
    static PassRefPtr<BackForwardListChromium> create(WebViewImpl*);
    virtual ~BackForwardListChromium();

private:
    BackForwardListChromium(WebViewImpl*);

    // WebCore::BackForwardList methods:
    virtual void addItem(PassRefPtr<WebCore::HistoryItem>);
    virtual void goToItem(WebCore::HistoryItem*);
    virtual WebCore::HistoryItem* itemAtIndex(int index);
    virtual int backListCount();
    virtual int forwardListCount();
    virtual bool isActive();
    virtual void close();

    WebViewImpl* m_webView;

    RefPtr<WebCore::HistoryItem> m_currentItem;

    // The last history item that was accessed via itemAtIndex().  We keep track
    // of this until goToItem() is called, so we can track the navigation.
    RefPtr<WebCore::HistoryItem> m_pendingHistoryItem;
};

} // namespace WebKit

#endif
